Locomotive



Oct. 27, 1931.

M. c. M HATCH LOCOMOTIVE Filed Nov. 6. 1928 5 Sheets-Sheet. 1

INVENTOR /Ke//e/z 6.4% fafa/5 ATTORNEY hm. NN

Oct. 27, 1931. M. c.-M. HATCH 1,829,044

LOCOMOTIVE Filed Nov. e, 192s 5 sheds-sneer 2 IN VEN TOR /f//en a /f/yafm B Y A TTORNEY Oct. 27, 1931. M, M HATCH 1,829,044

LOCOMOTIVE Filed Nov. 6, 1928 3 Sheets-Sheet 3 A TTORNE Y Patented Oct.27, 1931 UNITED STATES MELLEN PATENT orpi-ica C. .'MI.v HATCH, OFBOSTON, MASSACHUSETTS, ASSIGNOR TO STANDARD ySJOKEIR COMPANY,INCORPORATED, A CORPORATION OF DELAWARE LOCOMOTIVE Application filedNovember 6, 1928. Serial No..317,620.

The invention relates to locomotives provided with mechanical stokers,its objects being to strengthen the locomotive, toprovide improved meansfor the introduction of the fuel by power and for convenience in handiring, and to secure other objects which will be pointed out inconnection with the description. j

A preferred embodiment of the invention is hereinafter described and isillustrated in the accompanying drawings in which Fig. 1 is a detail,central, longitudinal, vertical section of the rear end of thelocomotive and the forward end of the tender; f

Fig. 2 is a detail view of the same parts, partly in plan and partly inplan section on ,I the line 2 2 of Fig. 1;

lig. 3 is a detail on the line 3-3 of Fig. 1; an y Fig` 4 is a detailview in perspective of a portion of the foundation ring of a locomotiveboiler and an integral arch formed thereon for enclosing the fuel feedopenings.

The frames of the locomotive and tender are shown conventionally at 10and 11. The backhead of the boiler of the locomotive is shown at 12; thefirebox thereof at 13; the grates are indicated at 14; the cab firingfloor or deck,at 15; and the tender deck at 16.

The walls of the boiler including its backhead which enclose thefirebox, are, as usual, hollow and are bounded at the bottom by afoundation or mud ring 17. As usual, the foundation ring may be formedof a heavy casting or forging, and in carrying out the presentinvention, it is provided with an integral upstanding arch 18 whichencloscs theI opening for the admission of fuel and to i which the innerand outer sheets 19. 20 of the backhead may be secured by usual means,Without deviating from the common form,

, except that they are suitably cut away to pro.

an openable door (notshown) of any suitable' form.

The space below the plate 21 and above the foundation ring is open forthe accommodation of the stoker conduit and the admission of air forcooling the same. The opening in the backhead may be increased in thevertical dimension,without carryingit too high for convenient hand iringby off-setting the` foundation ring downwardly across its bottom asindicated at 24;, see Figures 3v and 4.

The rear portion of the fuel conduit may be of any preferred form, beingshown as comprising a trough 25 located below the floor ofthe tender andreceiving fuel from an aperture therein and being provided with aconveyor screw 26 and a suitable crushing device 23 cooperatingtherewith. Leading from the forward end of the trough 25 is a tubularconduit comprising a rearward section 27 universally jointed to theforward end of the trough 25 and the forward section 28 looselytelescopically fitting upon the rearward section and provided at itsforward end with one element of a ball joint 29. The forward portion'ofthe conduit comprises two freely telescoping sections 30, 3 1, theformerI having at its rearward-end an element 32 of a ball joint whichengages the element 29 and is seated upon and rigidly attached to achair 33 carried by a frame member as 10 of the locomotive frame. Thesection 31 eX- tends through the lower portion of the a erture in thebackhead which is enclose the arch 18 and within the firebox takes theform of an upwardly opening elbow or nozzle fi from which fuel isdelivered into the fire- This elbow is seated upon and rigidly securedto a chair 35 attached to the portion 24 of the foundation ring whichspans the lower end of the arch 18. A section 36- of the screw conveyoris located within the intermediate section of the conduit comprising theelements 27, 28, and a third section 37 is located within the-conduitsections 30, 31 terminating at the base of the elbow 34. The threeconveyor screw sections are united by universal joints and the whole isdriven from a suitable motor, conventionally shown at 38, by means of ashaft 319 connected with the rear end of the conveyor screw in any wellknown manner. lhe elbow 311i is protected. from the furnace heat by agratedv shirt l0 eirtending `from its upper end to the fireboi; grate.'lhe portion of the fuel conduit which is carried by the locomotive ispreferably ll-shaped, being flattened at the top, for the purpose ofcheclring the tendency of the fuel to rotate and to yarn the elbow.

lluel issuing from the elbow or nozzle 3e.- is scattered over theflrebon grate by steam blasts issuing from a bon tl located iminediately above the opening of the elbow and. at its rearward side, andsupplied with steam through a plurality of pipes t2 leading from 'asteam chest secured to the outer sheet of the baclrhead and which may beconnected as by means of a pipe all directly with the steam dome of thelocomotive.

Each of the pipes 42 is preferably provided. with an individualcontrolling valve as indicated at l5 whereby the trimming of the firemay be facilitated by cutting of' the pipes leading to the box 4l whichscatter the fuel over portions of the grate which may have been overfedwith fuel.

r.lhe described arrangement for the admission of fuel through a commonopening in the baclrhead facilitates the attachment of the steam pipesassociated with the fuel distributor without requiring them to beextended downwardly under the foundation ring in accordance with thepresent practice in connection with stolters of the scatter feed type.

@ne of the serious dimculties encountered in mechanically tiring alocomotive through itsbaclrhead is due to the expansion of the boilerunder the influence of the furnace heat, this expansion moving thebaclrhead backwardly a considerable distance, putting the Stoker conduitunder severe strain and sometimes causing its fracture or distortion.This diculty is overcome in the construction above described by formingthe portion of the conduit which is carried by the locomotive in twofreely telescoping sections, each being rigidly and independentlysecured to the locomotive.

'lhe inverntionI is applicable both to new and old locomotives, thelatter being easily remodeled for its incorporation. lin old locomotivesto which the invention is applied, it may sometimes be found desirableto put in an entirely new foundation. ring or the arch t8 may be weldedon to the existing foundation ring.

lthile the construction shown and described is highly efficient anddesirable, the invention may be differently embodied within its scope asdened by the appended claims.

l claim:

l. il locomotive having a boiler including a lireboir, a foundation ringbounding the lower margins of the walls of the firebon, such neoaoeering having an integral upstanding ar li po:n tion, said portion andring entirelyv bounding a fuel admission opening in the baclrhead of thefireboiz.

Qi. A boiler including a fireborr, a foundation ring shaped tocorrespond to the ground plan of the lirebor, the baclhead of saidtirebon having a fuel admission openin and said ring having an e'" endedportion entirely bounding said openi` 3. its a newl article of mani'f2.cture, a loco motive foundation ring shaped to correspond to theground plan of a lireboir having an integral upstanding :h formed in itsrear transverse section, said arch and said rear transverse sectionentirely bounding an opening'adapted to provide access for mechanicaland manual firing of fuel to the tireboit.

4. its a new article of manufacture,

a lire bor. foundation ring having an upstanding' portion with a fueladmission opening formed. therethrough, said ring together with. its upstanding portion entirely bounding said ad mission opening.

5. fis a new article of manufacture, a boiler foundation ring having aportion with liring opening of a boiler formed therein portion entirelybounding said opening.

6. As a new article of manufacture, a boiler foundation ring comprising1four side sections, said ring having an upstanding portion formed on oneof said sections, said arch extending above said ring section a height-suiiicient to provide an opening theren through for mechanical andmanual :tiring of fuel to a boiler, said arch portion together withsaid. ring section on which it is forme l entirely bounding saidopening.

'7. As a new article of manufacture, the rearward transverse section ofa boiler foundation ring having formed centrally thereof an upwardlyextended portion. tirely bounding and forming an archway adapted to formthe firing opening of boiler baclwall.

8. As a new article of manufacture, a boiler foundation ring havingformed with one of its sections an extended portion entirely' boundingand forming an opening in said `ring adapted to form a firing opening ofa boiler.

9. ln combination, a boiler including a fire box having hollow walls, afoundation ring bounding the lower margins of said walls, said ringformed with an extended portion entirely bounding and. forming a fueladmission `opening' into said lirebox, and stelt-er lconduit positionedin said opening mounted. on said ring.

l0. ln combination, a boiler including iireboX having hollowwalls, afoundation. ring bounding the lower margins of said walls, said ringformed with an upstanding extended portion entirely bounding andsaidring till llltl :lill

forming an elongated fuel admission opening through the rebox backwall,a firing floor extending rearwardly from such backwall and disposed in ahorizontal plane intermediate the lower and upper margin-s of saidopening, said floor arranged with said opening to permit hand firing offuel through the opening above the iioor, and a Stoker conduitpositioned in said opening and mounted on l@ said ring.

11. In combination, a boiler including a ireboXV having hollow walls, afoundation ring bounding the lower margins of said walls, the backwallof said irebox having a l5 fuel admission opening extending upwardlyfrom its lower margin, a firing floor extending rearwardly from thefrebox backwall and disposed in a horizontal plane intermediate thelower margin of'said backwall and the upper margin of 'the openingtherein whereby fuel may be introduced manually above said floor andmechanically from below said floor through such admission opening, andan upstanding extension of said ring bounding said admission openingabove and below said floor.

In testimony whereof I aiiix my signature.

MELLEN C. M. HATCH.

